Nat. Chem. Biol. 4, 119–125 (2008); published online 6 January 2008; corrected after print 13 February 2009

In the version of this article initially published, the reported chemical structure and systematic name for mirin (compound 1), identified from a high-throughput screen, were incorrectly assigned in the commercial library. Investigations by Garner, Pletnev and Eastman (Correspondence: Nat. Chem. Biol. 5, 129–130, 2009), which have been confirmed by us (Response: Nat. Chem. Biol. 5, 130, 2009), have identified the correct structure of mirin (see illustration below). The systematic name and chemical structure for mirin have been corrected in the HTML and PDF versions of the article, and in the graphical abstract and the PubChem database.